<template>
  <div style="background: #ccc; height: 50px">
    <h3>儿子小明: 有存款: {{ money }}</h3>
    <button @click="geiQian(50)">给BABA钱: 50</button>
  </div>
</template>

<script>
export default {
  name: 'Son',
  data() {
    return {
      money: 30000,
    };
  },

  methods: {
    tinghua() {
      console.log('我是小明，我听爸爸的话');
    },
    geiQian(money) {
      this.money -= money;
      this.$parent.money += money;
    },
  },
};
</script>
